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SHARE-BASED AWARDS (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Share-based compensation disclosures |  |  |
Common stock available for future issuance (in shares) | 6,200,000 |  |
Stock options |  |  |
Share-based compensation disclosures |  |  |
Options granted, weighted average grant-date fair value (in dollars per share) | $ 10.74 | $ 8.92 | $ 6.59
Weighted average valuation assumptions |  |  |
Expected volatility (as a percent) | 31.80% | 29.20% | 28.80%
Expected term | 6 years 1 month 6 days | 6 years | 5 years 9 months 18 days
Risk-free interest rate (as a percent) | 1.20% | 2.30% | 2.70%
Dividend yield (as a percent) | 2.70% | 3.10% | 3.80%
Options cancelled in connection with separation (in shares) | 2,900,000 |  |
Activity in the entity's stock option plans |  |  |
Outstanding, beginning of period (in shares) | 2,096,000 |  |
Granted (in shares) | 111,000 |  |
Exercised (in shares) | (687,000) |  |
Forfeited and expired (in shares) | (167,000) |  |
Outstanding, end of period (in shares) | 1,353,000 | 2,096,000 |
Exercisable (in shares) | 911,000 |  |
Weighted average exercise price |  |  |
Outstanding, weighted average exercise price, beginning of period (in dollars per share) | $ 20.11 |  |
Granted, weighted average exercise price (in dollars per share) | $ 23.74 |  |
Exercised, weighted average exercise price (in dollars per share) | $ 17.57 |  |
Forfeited and expired, weighted average exercise price (in dollars per share) | $ 24.62 |  |
Outstanding, weighted average exercise price, end of period (in dollars per share) | $ 21.15 | $ 20.11 |
Exercisable, weighted average exercise price (in dollars per share) | $ 21.40 |  |
Outstanding, weighted average contractual life | 5 years 7 months 6 days |  |
Exercisable, weighted average contractual life | 4 years 6 months |  |
Outstanding, aggregate intrinsic value | $ 4,794 |  |
Exercisable, aggregate intrinsic value | $ 3,071 |  |
2007 Plan |  |  |
Share-based compensation disclosures |  |  |
Common stock initially available for future issuance (in shares) | 2,215,000 |  |
Common stock available for future issuance (in shares) | 6,200,000 |  |
Additional shares of authorized for issuance | 2,200,000 |  |
Number of separate incentive compensation programs | 4 |  |
Number of share based compensation plans within the entity's incentive compensation programs | 3 |  |
2007 Plan | Discretionary Grant Program |  |  |
Share-based compensation disclosures |  |  |
Exercisable period | 3 years |  |
2007 Plan | Stock options |  |  |
Activity in the entity's stock option plans |  |  |
Outstanding, beginning of period (in shares) | 1,329,000 |  |
Granted (in shares) | 111,000 |  |
Exercised (in shares) | (448,000) |  |
Forfeited and expired (in shares) | (38,000) |  |
Outstanding, end of period (in shares) | 954,000 |  |
Exercisable (in shares) | 512,000 |  |
2007 Plan | Stock options | Discretionary Grant Program |  |  |
Share-based compensation disclosures |  |  |
Minimum exercise price as a percentage of fair market value of common stock | 100.00% |  |
Expiration Term | 10 years |  |
2007 Plan | Performance-Based Restricted Stock Units | Stock Issuance Program |  |  |
Share-based compensation disclosures |  |  |
Vesting period of awards granted | 3 years |  |
2007 Plan | Time-Based Restricted Stock Units | Stock Issuance Program |  |  |
Share-based compensation disclosures |  |  |
Vesting period of awards granted | 3 years |  |
2007 Plan | Restricted Stock Units |  |  |
Share-based compensation disclosures |  |  |
Options granted, weighted average grant-date fair value (in dollars per share) | $ 17.46 |  |
2007 Plan | Restricted Stock Units | Automatic Grant Program |  |  |
Share-based compensation disclosures |  |  |
Vesting period of awards granted | 3 years |  |
1998 Plan | Stock options |  |  |
Activity in the entity's stock option plans |  |  |
Outstanding, beginning of period (in shares) | 572,000 |  |
Exercised (in shares) | (190,000) |  |
Forfeited and expired (in shares) | (129,000) |  |
Outstanding, end of period (in shares) | 253,000 |  |
Exercisable (in shares) | 253,000 |  |
Predecessor Plans 1998 Plan | Stock options |  |  |
Share-based compensation disclosures |  |  |
Vesting period of awards granted | 3 years |  |
Expiration Term | 10 years |  |
Period of time within for an option to be exercised for eligibility for reload feature and new stock option grant | 5 years |  |
Ratio to convert original option price under reload feature | 1.5 |  |
Predecessor Plans 1998 Plan | Performance-Based Restricted Stock Units |  |  |
Share-based compensation disclosures |  |  |
Vesting period of awards granted | 1 year |  |
Predecessor Plans 1998 Plan | Time-Based Restricted Stock Units |  |  |
Share-based compensation disclosures |  |  |
Vesting period of awards granted | 3 years |  |
Predecessor Plan 1998 Directors' Plan | Stock options |  |  |
Share-based compensation disclosures |  |  |
Exercisable period | 3 years |  |
Number of shares that can be purchased with the annual option (in shares) | 8,000 |  |
Activity in the entity's stock option plans |  |  |
Outstanding, beginning of period (in shares) | 195,000 |  |
Exercised (in shares) | (49,000) |  |
Outstanding, end of period (in shares) | 146,000 |  |
Exercisable (in shares) | 146,000 |  |

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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(2)(c) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(2)(b) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(2)(d) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Number of additional shares authorized for issuance under an established share-based compensation plan. + References No definition available. + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph d(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(b) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(a) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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